Pneumatic water-lift.



IZSHEETS-SHEET I.

Patented Apr. 24,

L G. CHASON.

PNEUMATiC WATER LIFT.

APPLICATION HLED JUNE 23.1916.

v 1 z w M J. G. CHASON. PNEUMATIC WATER LIFT.

APPLICATION HLED JUNE 23, l9l6.

1,2224% Patented Apr. 24,1917.

2 SHEETS-SHEET 2.

Jay/7080 JOHN G. CHASON, OF GOLQUITT, GEORGIA.

PNEUMATIC WATER-LIFT.

Specification of Letters Patent.

PatentedApnQt, ieiv.

Application filed June 23, 1916. Serial No. 105,430.

To all whom it may concern:

Be it known that 1, JOHN G. CHAsoN, a citizen of the United States, residing at Colquitt, in the county of Miller and State of Georgia, have invented certain new and useful Improvements in Pneumatic VVater- Lifts; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to new and useful improvements in pneumatic water lifts, and the principal object of the invention is to provide a means for raising water from deep wells without the necessity of using the ordinary type of pump.

Another object of the invention is to provide a device which is operated by air pressure and is so arranged as to prevent any waste of the air.

A further object of the invention is to provide an automatic means for controlling the supply of air to the device, which is operable upon the opening or closing of a faucet.

Still another object of the invention is to provide a novel form of valve controlling means for controlling the passage of air from the storage tank.

With these and other objects in view, the invention consists in the novel combination and arrangement of parts, which will be fully set forth in the following specification and accompanying drawing, in which:

Figure 1 is a view partly in section illustrating this improved water lift as it would appear when in use,

Fig. 2 is a fragmentary enlarged detail view partly in section, illustrating the valve and controlling means therefor,

Fig. 3 is an enlarged detail fragmentary sectional view of the lower end of the water lift,

Fig. 4: is an enlarged transverse sectional view on the line tet of Fig. 1,

Fig. 5 is an enlarged transverse sectional view on the line 55 of Fig. 1,

Fig. 6 is a top plan view of the valve illustrated in Fig. 2,

Fig. 7 is an enlarged detail fragmentary view, partly in section, of the ejector pipe, and

Fig. 8 is an enlarged detail view of one of the check valves.

Referring to the drawings, the numeral 1 designates the well casing in which the tube 2 of the water lift is lowered. This tube 2 may consist of a plurality of sections, as illustrated, which are secured together by suitable sleeves or couplings, and secured to the lower end of the tube is the tank 3, the lower end of which is closed by a cap 4, having a valve seat 5 formed therein. A suitable valve 6 cooperates with the valve seat 5 in closing the port in the lower end of the cap and is mounted on the stem 7, the upper end of which carries a float 8. The float 8 is preferably of such a nature as to operate only when water is being drawn from the tank 3, so that ordinarily when the device is at rest the valve 6 will remain seated to prevent the escape of air. Formed in the upper end of the tank are suitable threaded ports 9 and 10, which, respectively, receive the air inlet and water outlet pipes 11 and 12.

The water outlet pipe, above referred to, is provided at various places throughout its length with suitable check valves 13', consisting of the bodies 14 formed with valve seats 15 on which the ball valve 16 seats, and it will thus be seen that when the water passes upwardly through the pipe 12 the valves will be lifted from their seats to permit the escape of water therethrough.

The lower end of the air inlet pipe is connected to the nozzle 17 the free end of which is disposed, as at 18, within the liquid outlet pipe, and it will thus be seen that as the air passes through the nozzle 17 the water in the tank will be drawn upwardly through the pipe 12. The upper end of the air inlet pipe is connected by a branch pipe 19 to the automatic valve, which will be more fully hereinafter described, and the upper end of the pipe 12 is connected to the outlet pipe 20, which in turn leads to the automatic valve controller, designated generally by the numeral 21.

The automatic valve controller, above referred to, consists of a cylinder 22 in which is slidably mounted the piston 23. The lower end of the cylinder is closed in any suitable manner and the said closer is formed with a central opening into which the pipe 24 leads. This pipe 2-1 connects with. the tubular body 25, which is connected at one end to the pipe 20 and at its opposite end to the outlet pipe 26, which in turn is provided at its opposite end with a suitable faucet 22 by means of which the passageof water through the pipe is controlled.

The piston 23 is provided with a piston rod 27, the upper end of which is connected to a suitable cross head 28, having rods 29 secured thereto, which lead downwardly and are connected to a suitable cross head 30 which is formed centrally with a weight 31, which is adapted to cooperate with the automatic valve to be hereinafter more fully described.

Extending downwardly from the sleeve 25 are suitable brackets 32, which are connected at their lower ends to the automatic valve, designated generally by the numeral 33. This valve consists of a valve body having an air inlet passage 34. and an outlet passage 35, which passages are separated by a suitable wall formed with avalve seat 36, which opens between said passages, as clearly shown in Fig. 2. A suitable valve 37, cooperates with said valve seat in closing the opening between the passages 84-. and 35 and the stem 38 of said valve seat is slidable through a suitable opening, and is surrounded by a suitable compression coil spring 39, the upper end of which bears against the under side of the valve while the lower end bears against the bottom wall of the passage 34. It will thus be seen that under normal conditions the valve is held upwardly so as to close the port. In order to provide an opening means for the valve a suitable stem 40 is slidable through the upper wall of the passage 35 and projects upwardly within close proximity to the weight 31. The upper end of this stem is provided with the head 41 and a coil spring 4E2 surrounds the stem and abuts the under side of the head and the upper wall of the passage 35, so as to normally hold said stem upwardly.

In use, it will be seen that the air pressure pipe, designated by the numeral 43, is connected to the pressure tank 14L, which in turn is connected by a suitable pipe 45 to a pump, not shown, and upon the opening of the faucet 22 it will be apparent that the reduction of pressure within the sleeve 25 and cylinder 22 will permit the piston 23 to drop, thereby causing the weight 31 to engage the head 11 and move the stem 40 downwardly into contact with the valve, 37, thus unseating the same and allowing the air to pass from the pipe 13 into the pipe 19, and thence downwardly through the pipe 11 and nozzle 17 into the liquid outlet pipe 12. The rapid fall of air into the pipe 12 causes a vacuum to be formed immediately surrounding the nozzle and it will be apparent that the water within the tank 3 will be drawn upwardly through the pipe 12 and will flow out through the faucet 22. As long as the faucet is left open it will be apparent that water will be supplied to the tank 3, since the same is positioned below the water level of the well, and it will be apparent that the float 8 will hold the valve 6 upwardly. Upon closing the faucet 22 it will be apparent that the pressure within the pipe 20 and cylinder 22 will cause the piston 23 to move upwardly, as shown in the drawings, thereby discontinuing the flow of air through the pipes 19 and 11 and allowing the valve 37 to seat. Due to the action of the check valve 13 it will be apparent that the pressure will be retained within the cylinder 22 until it is relieved by the opening of the faucet, thus holding the piston 23 in its elevated position. As soon as the flow of air through the nozzle 17 is discontinued it will be evident that the valve 6 will return to its seat as the float 8 is not of Suficient strength to cause the same to remain unseated, and in this way it will be apparent that the pressure will be retained within the tank 3 and the pipes 11 and 19.

lVhile in the foregoing there has been shown and described the preferred embodiment of this invention, it is to be understood that such changes may be made in the combination and arrangement of parts as will fall within the spirit and scope of the appended claims.

What is claimed is:

1. In a device of the class described, a cylinder, a piston operable in said cylinder, a cross head connected with the piston, a weight supported by the cross head, an automatic valve beneath the weight, and a stem positioned above said valve and be neath the weight whereby when the pressure in the cylinder becomes reduced the weight will descend against the stem and open the valve.

2. In a device of the class described, a water outlet pipe, an air inlet pipe, a cylinder connected to the outlet pipe, a piston operable in said cylinder, a piston rod extending upwardly from said piston, a cross head carried by the piston rod, arms eX- tending downwardly from said rod, a weight supported by the lower ends of the arms, a normally closed valve in the inlet pipe, and a stem positioned above said valve and beneath the weight for engagement with said valve when the weight descends, the said piston lowering under the influence of the weight when the pressure in the cylinder becomes reduced. 7

In testimony whereof I afliX my signature in presence of two witnesses.

JOHN G. CHASON.

Witnesses:

A. W. HARRELL, S. W. lVATsoN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

